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<h2>MySQL database</h2>
The database servers, a master (main) and a slave (main2) handle all database traffic: Bugzilla, search engine, website, the Wiki, and others. All write operations (committing a bug, indexing the site, tracking a download) go to the master
and are replicated immediately to the slave. Some applications, such as Bugzilla, Download Stats, the Website and Search, use the slave server for
searches and lookups for increased performance.<br /><br />
A high load average on main or main2 will cause database operations to be slower. The Queries_Per_Second and Threads metrics are good indicators of
how busy the database servers are.